Re: [ATM] Spectroscopy and fiber optic info needed

[Dominic-Luc Webb <dlwebb@canit.se>]

On Wed, 21 Jan 2004, Bob May wrote:

>
> Using a micro prism to split the star first won't be what you want to do as
> the resolution becomes that of the fiber spacing.
> Interesting that fibers have gotten so small but they'll take anything to
> the limit of what can happen physically.
> My suspicions are that I'd chose a diameter of acceptance of about twice the
> Airy disc for the fiber at the largest and run that to the testing equipment
> for further processing.  Using color dependent fibers really doesn't give
> you any really better resolution of the spectrum unless you are intending to


Agreed. The issue was that very narrow optical fibers are readily
available. Some measurements really only need a single wavelength
or only a few, and in this case these hollow core nanofibers are
quite interesting. As always, all these tricks are application
dependent.

Dominic